Adjustable emery-wheel dresser



April 30, 1929. H. afnuRNx-:R 1,711,343 v ADJUSTABLE MERY WHEEL DREssER l y Filed June 25, 1928 Patented Apr. 30, 1929.

iso STATES PATENT OFFICE.

ADJUSTABLE EMERY-WHEEL v:DRESSEL.

Application filed .Tune 25, 1928. Serial vrNo. 288,273.

This invention aims to provide a novel means whereby an emery wheel dresser maybe heldin adjusted positions with respect to the wheel which is to be dressed. The invention aims, moreover, to improve generally and enhance the 'utility of devices of that class to which the invention appertains.

lVith the above and other objects in view, which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed, may be made within the scope of what is claimed, without departing from the spirit of the invention.

In the accompanyingdrawings:

Figure 1 shows in longitudinal section, a device constructed in accordance with the invention, parts being in elevation;

Figure 2 is a cross section on the line 2-2 of Figure 1, parts being in elevation.

TheV tool forming the subject matter of this application comprises a tubular handle 1 provided at its forward end with a recess 2 forming an internal shoulder 3, and supplied at its rearl end with a recess 4 defining an internal shoulder 5. The Vhandle 1 has a longitudinal bore 6 and is provided with a longitudinal slot 7 communicating with the bore. The slot 7 terminates short of the ends of the handle 1, as disclosed clearly in Figure 1 of the drawings.

rilhe numeral 8 serves to designate, generally, a holder for the element which dresses the emery wheel. The holder includes a body 9 having a head 10, the body of the holder being threaded into the recess 2 of the handle 1. When the head 10 abuts against the forward end of the handle 1 there is a space 11 between the inner end of the body 9 and the shoulder 3.

The head 10 of the holder 8 carries forwardly extended arms 12 in which is mounted a shaft 14 which carries the rotatable wheel dresser 15. A latch l16 is ,pivotally mounted at 17 on one of the arms 12 and engages the shaft 14 tohold it in place in the arms 12. It is possible, however, to disengage the latch 16 from the shaft 14, and then the shaft can be pulled up to permit one wheel dresser to be substituted for another.

. Alhood 18 is secured to the arms 12 and to the head 10 and overhangs the wheel dresser 15, to prevent the sparks or grains from flying into the face of the operator.

The dresser 15, of course, is used for truing offthe periphery of an emery wheel 19. The numeral 2O designates a tool rest of the kind usually found near machines used in dressing einery wheels.

.A turning button or other equivalent device, marked by the numeral 21, is located to the rear end of the handle'l and has a reduced neck 22 which extends into the recess 4 up to the shoulderl 5 or near to it. The numeral 23 designates a screw which extends lengthwise of the handle 1, through the bore t3. The rear end of the screw 23 is mounted in the turning button 21 and is held in it by securing elements 24 and 25. It is here to be notedV that the securing element 24 lies inside of the handle 1, and consequently the securing element 24 can not drop out. If the securing element 25 happens to become detached, the securing element 24 will still be in place. The forward end of the screw 23 is joui-nailed in a bearing recess 26 that is fashioned in the inner end of the body 9 of the holder 8. In order tov hold'the screw 23 against moving endwise, and to keep the button 21 in place for rotation, a disc 27 is held on the screw 23 by a securing` device 28.

The disc 27 turns freely in the space 11 that exists between the shoulder 3 and the inner end of the body 9 of the holder 8, but the disc fits closely enough in the space shown at 11, so that the screw 23 has no longitudinal movement to speak of. The disc 27 may be alluded to as an enlarged part of the screw 23. An abutment block 29 fit-s closely but slidably in the slot 7 and extends out of the slot far enough so as to engage the tool rest 20, as shown at 30 in Figure l. The abutment block 29 has an eye 31 on its inner edge, the eye being located inthe bore 6 of the handle 1. The screw 23 is threaded through the eye 31 of the abutment block 29.

The screw 23 may be turned by means of the button 21, and when the screw is turned, the abutment 29 is moved back and fort-h for adjustment. This is a desirablel feature, and the structural means whereby the screw 23 is mounted and held for rotation, are of importance along with other features of the device which need not be alluded to in detail at this point.`

Having thus described the invention, what is claimed is:

l. In a device of the class described, a handle, a dresser carried by the handle, an abutment slidable on the handle, a screw threaded into the abutment, and means for holding the screw on the handle for rotation but against longitudinal movement.

2. In a device of the class described, a handle, a holder on. the handle, a dresser earried by the holder, a screw within the handle and having an enlargement received for rotation between tlie holder and a part of the handle, to prevent the screw from moving lengthwise, and an adjustable abutment on the handle, the screw being,` threaded into the abutment and constituting means for shifting the abutment.

3. In a device of the class described, a handle, a holder on one end of the handle, a button on the opposite end of the handle, a dresser carried by the helder, a screw secured to the button and journaled` on the holder, means for retaining the screw against longitudinal movement, and an abutment adjustable longitudinally of the liandle, the screwbeing threaded into the abutment.

In testimony that I claim the foregoing as my own, I have hereto affixed my signature. f

HERBERT B. DURNER. 

